Gas-washer.



PATENTED FEB. 19, 1907.

I. E. BACHMAN.

GAS WASHER.

APPLIOATION FILED JULY 11, 1900.

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WITNESSES PATENTED FEB. 19, 1907.

I. E. BAGHMAN.

GAS WASHER.

- APPLICATION FILED JULY 11, 1906.

g f l fmm UNITED sT rns PATENT OFFICE.

FRANK E. BACHMAN, or roar nENRxNEwYoRK.

GAS-WASHER.

Specification of Letters Patent.

Patented Feb. 19, 1907'.

Application filed July-11,1906- Serial No. 825.632.

Figure 1 is a side elevationshowing one form of apparatusconstructed in accordance with my invent'on. Fig. 2 is a sectional lan view. Fig; 3 is a' partial vertical section of the bottom portion of the washer, and Figs. 4 and 5 are enlargeddet'ail sections of the two waterdistributing troughs and adjacent parts.

My invention relates to apparatus for sepa-' rating dust fromgases', and is designed to provide a simple and eflieient apparatus ofthis character in which the inner surface of the casing-wall is'bathed' with water. against ing in a tube or material 8 8.

which the dust particles are thrown from the gas by centrifugal force. The gasis given a rotary or spiral path, preferably by arranging the inlet in a tangential or non-radial direction.

The invention further consists in prdvide ing a protecting-covering for the-metal surfaces which are not bathed with Water, in .ar-' ranging, the water-distributing troughs in different sections, partly below the inlet and partly above such level, and, further, in the construction and arrangement of parts, as hereinafter more fully described and claimed.

In the drawings, 2 represents a casing,

which I have shown as cylindrical in form, having a bottom hopper portion 3, terminatout enters a water-sealing trough 5. The upper portion or top 6 of the casing is preferably of frusto-conical shape, and through it extends the cylindrical outlet flue or pipe 7. This pipe extends down within the lower portion of the washer and is both sides by;

preferably protected on layers of brick or refractory I'have shown such layers as] being supported u on a'ring' 9,'secured to the lower portion of t 0 metal pipe.

' The inlet-pipe 10 en ers the gen 'al or DOD-Tildlftl'dlrection, thus causing the gas to take'a'spiral' path as it flows around within the casing and own to enter the outlet.

In order to bathe the interior of the outer shell or casingwith water without substant'ially spraying BAOHMAN,

the Water through the gas, *1 preferably employ an external water box or boxes. In the fo mshown' the upper waterbox 11 extends around the upper "part of the casing for about three-fourths of its circumferenoe, terminatingat flue. In the form shown this box is divided intotwo' com artments by a longitudinal partition 12, w 'ch extends down for a part of the" height of the chamber to allow the water to flow from inner chamber 14. The inner chamber 14 is through the shell of the washer and allowing the water to flow down over the inner surface. In order to obtain .a substantially even flow throughout the length of the. trough, 1' preferably provide crossarti- -tions. at intervals to separate it into 0 ambers, each of which has its own supply-pipe. In the form shown there are three partitions 1'6 and three water-inlet pipes 17, which diset 4, which prefer-ably upper portion.

charge into funnels 17, set in the cover of the.

box. v

The head of the Water in the distributingbox is preferably such as to just over-balance the pressure of gas on the inside, so" that the water'flows through the openings-without having sufficient head orpressure to spray it into the body of the washer. 'It therefore trickles down over the inside of-the wall or casing and is distributed over the whole surface by the circular movement .of the gascurrent. The remaining one-fourth of the circumference of the casing is provided-with a separate external water tron h or box 18, located immediately below t e as -inlet. This box is preferably similar to t e upper box, having the communicatingthrough holes 20, leading through the casing. 21 is the supply-pipe for thls trough, and 22 is a valved washoutpipe, the sameas the pi cs 23 for the upper trough. As the gas ows inwardly and downwardly through the casing it takes a s iralpath, the dust, particles tostrike the c lindrical sheet of Water, and thus to be was .ed down into the seal atthe bottom.

- Those partsof the inner surface of the shell or casing which are not notected by the water are preferablysuppliedi with a protect-' ing'layer 24,,of brick or refractory material,

ing through the washer, it s generally under the sides of the inletthe outer chamber into the, r

provided with a slot or series ofhole's'15, cut

longit dinal baflle 19 and l C O and its cen rifugal actioncauses as shown in Figs; 4 and 5. When gas is pass- IIO is a

ume of water fed into the outer portion 13 of the box. The openings-15, therefore, are not 5 entirely closedby water, and gas can pass pressure as the gas in the washer. When water is poured into the box 13 the pressure [0 of the gas in the washer and in the space above the water inthe part 14 counterbalances it and prevents water from entering the washer until the level 13 is high enough to counterbalance the gas-pressure. Water 15 then flows through the openings 1.5 into the washer. If the pressure increases, the difference in level in the parts 13 and 14 increases,

. while if the pressure of the gas decreases the difference in level also decreases until at the point of no pressure the water is at the same level in both compartments. The flow of water through the openings is thus automatically regulated, the water at the same time acting as a gas seal to prevent the gas from 2 5 passing through the openings'1 5 out into the air.

The baffle or apron 19 makes an air-tight joint with the Z-bar 19, to which it is secured, and theZ-bar also makes an air-tight 61 oint with the extension of the shell to'which it is secured.

The advantages of my invention result from the external arrangement of the trough,

from the use of the trough-section below'the 3 5 inlet, and the use of suflicient head to overcome the gas-pressure and yet prevent substantial spraying of the water into the gascurrent. The refractory lining for parts not a watercooled is also of advantage in prolong- 0 ing the life of the device.

Many changes may be made in the form and arrangement of the washer and its parts;

without departing from my invention.

I cla1m radial inlet and water-box located entirely 1. In a gas-washer, a casing havinga nonwater along the inner surface of the shell or casing; substantially as described.

2. in a gas-washer, a stationary verticallyextendingcylindrical casing having a gasl outlet, a gas-inlet extending in a non-radial mtothe sect1on.14 above the level of the water, the gas in this section being at the same 3; In ages-washer, a substantially cylin-.

drical casing having a lateral, tangentiallydirected non-radial inlet and a central outlet at a different level, and means for directing water along the inner surface of t 1e casing or shell without substantially spraying of the gas; substantially as described.

4. In agas-washer, a chamber having a side inlet, a water-box below the inlet and extending for a part of the circumference, and another water-box above the level of said lower water-box; substantially as described.

5. In a gas-Washer, a chamber having. a side inlet, awater-b'ox below the inlet and extending for a part of the circumference, and another water-box above the level of said lower water-box, and extending thrhugh the major part of the circumference; substantially as described. I

6. In a gas-washer, a casing, a water-box extending around the casing, partitions dividing same into compartments and a sup plypipe for each compartment; substan tially as described. 7 n

.7. In a gas-washer, a casing having an external water-box, and means for maintaining a substantially constant head of water therein, just sufficient to'overcome the gas-pressure, and causing the water toflow down over the interior wall of the casing; substan tially as described.

In testimony whereof I have hereunto set my hand. I

FRANK E. BACHIA'IAN.

fVVitnesses:

H. E. KIDDER, R. J. Brent 

